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Technological Horizons in High Voltage Engineering: Towards the Power Systems...
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Technological Horizons in High Voltage Engineering: Towards the Power Systems of the Future

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F6: High Voltage".

Deadline for manuscript submissions: 4 May 2024 | Viewed by 2511

Special Issue Editors

Dr. Sebastian Dambone Sessa

E-Mail Website
Guest Editor
Department of Industrial Engineering, University of Padova, 35131 Padova, Italy
Interests: power transmission line modeling and analysis; fault location algorithms; stationary electrochemical and hybrid energy storage; high-voltage direct current installations; availability assessment of power transmission systems
Special Issues, Collections and Topics in MDPI journals
Dr. Angelo L’Abbate

E-Mail Website
Guest Editor
Ricerca sul Sistema Energetico, Milano, Italy
Interests: high voltage engineering

Special Issue Information

Dear Colleagues,

High-voltage equipment has always been a basic element for human technology since it makes it possible to safely transform, transmit and convert electrical energy and to make it available for industrial and domestic utilization.

Moreover, in the times we are living in, most countries are dealing with the energy transition from fossil energy sources to renewable energy ones, with the aim of mitigating the carbon dioxide emissions to, in turn, attempt to mitigate environmental changes and their impacts, and ultimately to preserve the people’s health. In order to effectively achieve this noble and ambitious purpose, high-voltage engineering plays a key role in enabling such a massive penetration of renewable energies into power systems and, at the same time, to guarantee its safe operation.

Hence, this Special Issue offers an important opportunity to publish advances and the state-of-the-art in the high-voltage engineering field, together with research trends for the future developments.

More specifically, topics of interest include (but are not limited to) the following:

  • Advances in high-voltage technologies such as relays, transformers, cables and overhead lines, insulated gas lines and insulated gas substations;
  • Advances in power conversion systems to develop more efficient HVDC connections;
  • In-field experience and experimental evidence arising from practical applications of high-voltage engineering;
  • Advances in superconductive technologies;
  • Advances in testing high-voltage equipment;
  • Innovative strategies to manage the power systems, such as to support the frequency and voltage regulation of transmission networks and new approaches to avoid transmission line congestion;
  • Innovative modelling approaches to foresee the behaviour of power systems;
  • Overviews which clearly show the state of the art of a particular high voltage technology;
  • Modelling, advances and applications in flexible technologies, such as FACTS (Flexible AC Transmission System), DLR/RTTR (Dynamic Line Rating/Real Time Thermal Rating) and HVDC (High-Voltage Direct Current) devices;
  • Advances in high-temperature, low-sag conductors;
  • Modelling and implementation of innovative transmission technologies towards regional, continental and trans-continental applications and studies;
  • Transmission evolution and transition for RES integration and exploitation towards the decarbonisation pattern.

Dr. Sebastian Dambone Sessa
Dr. Angelo L’Abbate
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • high-voltage engineering
  • power systems
  • high-voltage energy transmission
  • high-voltage conversion
  • high-voltage relays
  • innovative transmission technologies

Published Papers (3 papers)

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Research

19 pages, 13880 KiB  
Article
Analysis of the Influence of Complex Terrain around DC Transmission Grounding Electrodes on Step Voltage
by Qi Xiong, Xiangyi Liu, Yanxin Li, Lingran Xi and Shuang Qiu
Energies 2024, 17(2), 420; https://doi.org/10.3390/en17020420 - 15 Jan 2024
Viewed by 504
Abstract
The distribution of renewable energy sources is geographically limited. In the process of long-distance transmission, the direct current flowing from a ground electrode into the ground will cause a higher step voltage, which will bring serious security risks to the surrounding industry and [...] Read more.
The distribution of renewable energy sources is geographically limited. In the process of long-distance transmission, the direct current flowing from a ground electrode into the ground will cause a higher step voltage, which will bring serious security risks to the surrounding industry and life. Accurate calculation of the complex soil electrical model around the grounding electrode is crucial for site selection. Existing simulation software like CDEGS results in significant errors, particularly in complex karst topography. Therefore, constructing a finite element model that accurately reflects the characteristics of geotechnical soil near the DC grounding electrode is an essential but unresolved problem. This paper establishes a soil electrical model for karst topography and explores the impact of cave-type caverns and underground rivers on the step voltage distribution of DC grounding electrodes. These research findings can guide the site selection of DC transmission projects in karst topography. Full article
(This article belongs to the Special Issue Technological Horizons in High Voltage Engineering: Towards the Power Systems of the Future)
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21 pages, 3770 KiB  
Article
Methods to Minimize the Effects of Geometric Asymmetry of Multi-Circuit, Multi-Voltage Overhead Lines on Transmission Network Operation
by Agnieszka Dziendziel and Henryk Kocot
Energies 2023, 16(22), 7611; https://doi.org/10.3390/en16227611 - 16 Nov 2023
Viewed by 587
Abstract
Multi-circuit, multi-voltage overhead lines (MMOLs) are becoming a favorable solution in the perspective of ensuring the efficient transmission of electrical energy and limitations relating to the expansion of the transmission network. The main part of this manuscript contains a method that minimizes the [...] Read more.
Multi-circuit, multi-voltage overhead lines (MMOLs) are becoming a favorable solution in the perspective of ensuring the efficient transmission of electrical energy and limitations relating to the expansion of the transmission network. The main part of this manuscript contains a method that minimizes the effects of risks on the operation of the power system due to asymmetrical MMOLs, with particular emphasis on the circuit with the lowest-rated voltage. The selected set of criteria includes elements such as the determination of the neutral point displacement voltage in the network with the lowest-rated voltage (zero voltage, U0), selected voltage quality factors, and short-circuit analyses to examine the impact of differences between the use of accurate and simplified mathematical models on the calculation of short-circuit currents. Methods to minimize the effects of MMOL geometric asymmetry have been proposed using simple technical steps, such as selecting the appropriate pole silhouette (indication of the methodology for identifying such supporting structures), changing the way of supplying individual circuits, or using partial transposition in the circuit with the lowest-rated voltage. The proposed methods are verified by analyzing a case study of the development of the transmission network in Poland. Full article
(This article belongs to the Special Issue Technological Horizons in High Voltage Engineering: Towards the Power Systems of the Future)
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16 pages, 8251 KiB  
Article
Analysis and Explanation of Resonant Phenomena Involving EHV Transformers during Power System Restoration Tests
by Roberto Benato, Sebastian Dambone Sessa, Giorgio Maria Giannuzzi, Cosimo Pisani, Michele Poli and Francesco Sanniti
Energies 2023, 16(9), 3754; https://doi.org/10.3390/en16093754 - 27 Apr 2023
Viewed by 939
Abstract
This paper deals with the simulation and the experimental confirmation of electromagnetic events that could interfere with the successful formation of the restoration path during the power system restoration procedure. The studied phenomena are more relevant for bulk power systems characterized by a [...] Read more.
This paper deals with the simulation and the experimental confirmation of electromagnetic events that could interfere with the successful formation of the restoration path during the power system restoration procedure. The studied phenomena are more relevant for bulk power systems characterized by a low short circuit power as the restoration backbone. In particular, two case studies have been simulated and analyzed: one related to a transformer energization during the formation of the restoration path, and the other one occurred after the de-energization of some transmission lines and one autotransformer belonging to the restoration path. From the simulation results, it emerged that such events are related to the resonant effects between the supplying transformer and the restored network. Such resonances could have negative effects on the restoration if they are not effectively managed. In order to evaluate the impact of such phenomena in real networks, the measurement recordings of on-field tests were compared with the simulation results. It is worth noting that the performed analyses require the knowledge of several parameters that were not always available in practice. Hence, the exact magnitude of the described resonant phenomena was not easy to foresee for the restoration of real networks. The performed comparison confirms the preliminary simulation results and highlights that detailed electromagnetic models are particularly important to support the power system restoration management, in particular the planning of recovery procedures. Full article
(This article belongs to the Special Issue Technological Horizons in High Voltage Engineering: Towards the Power Systems of the Future)
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